Scaffolding-support



(No Model.)

J. T. JOHNSON.

SGAFFOLDING' SUPPORT.

No. 352,873. Patented Nov. 16, 1886.

flttorney N. PETERS. Phumuxhn n hun wmhin lon, D4 0.

NIT ED STATES PATENT OFFICE.

JOHN THOMAS JOHNSON, OF'KELLERTON, ASSIGNOR or ONE-HALF TO 'cALvIN B.MORRIS,'OF MOUNT AYR, IOwA. i

,SCAFFOLDING-SUPPOR'II'.

EPECIPIC'ATION forming part of Letters Patent No. 352,873, datedNovember 16, 1886,

I Application filed Aprl18, 1886. Serial No. 198,232. (No model.)

To all whom it may concern.-

Beit known that I, JOHN 'IHoMAs J OHNSON, of Kellertou, in the county ofRinggold and State of Iowa, have invented certain new and usefulImprovements in Scaffolding-Supports; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

tion further consists in the various features of B B represent twosupporting-arms pivotally-secured-to the sides of bars A A at some 35distance below their connection.

D D represent braces hinge-jointed t0 h supporting-arms B B at theirextremities and provided at their lower ends with pins E E, adapted toenter perforations F in plates G, 0 secured to the bars A A. i

In using my improvements the operation is as follows: The bars areplaced over the peak of the roof, and in consequence of their hingeconnection they will conform to the angle of 5 the roof. When they arein place the supporting-arms are adjusted by placing-the pins at theends of the braces, in the perforations that will give the desiredadjustment, and after each supporting-arm is so adjusted a platform 50that will. permit workmen to work thereon may be made by any meansdesired.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, isb The combination, with two main barshingejointed together and provided with perforated plates G, of hingedarms, and hinged braces D, provided with pins E, adapted to enter theperforations of the plates, substantially as de- 60 scribed.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses. JOHN THOS. JOHNSON.

Witnesses: l

O. B. MORRIS, J As. O. ASHREN.

